Jan Seklucjan

[3][7] Threatened by the local bishop with a charge of heresy, in 1544 he found refuge at Königsberg (Królewiec, today Kaliningrad) in Ducal Prussia, at the time a fief of the Kingdom of Poland.

There he lived under the protection of Duke Albert of Prussia and began publishing and printing Lutheran literature in the Polish language.

He was encouraged in his endeavors by Duke Albert, who wanted to have the Bible and catechism translated into the vernacular language of the many refugees from Poland, who became his subject.

Seklucjan was in charge of the parish of the church in Steindamm (part of Königsberg),[8] which served as a local center for Lutheran Poles.

[2][3] Seklucjan also wrote original works, including Rozprawa krótka a prosta o niktórych ceremonijach i ustawach kościelnych (A short and simple treatise on some ceremonies and practices of the church"), a poetic dialog between a "student" (the author) who had just come back from travels abroad, and his elders who had stayed home.